DTC Code P0174
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DTC Code P0174
This code comes and goes which makes it hard to find the cause. I can tell it's going to turn on the CEL by the way the truck ('05 F350 5.4L) is running. Some days the truck will idle a little rough. When I step on the gas, truck makes a low groaning noise. Other times it runs fine and light will eventually go out. I checked the vacuum lines, exhaust leaks, and replaced the sensor 1 O2 sensor. Anyone got any ideas? Fuel filter?
You Keep What You Kill
Joined: Dec 2006
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From: Huntersville, NC
Did you clean the MAF?
OBD-II Trouble Code: P0174 System Too Lean (Bank 2)
Could be MAF, failing fuel pump, PVC...
Part 5 -P0171, P0174 Testing Tips (Ford 4.6L, 5.4L)
OBD-II Trouble Code: P0174 System Too Lean (Bank 2)
Could be MAF, failing fuel pump, PVC...
Part 5 -P0171, P0174 Testing Tips (Ford 4.6L, 5.4L)
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I cleaned MAF approx 3 months ago. Maybe it got dirty again, I'll check. I didn't think the VCT 5.4L had a PCV, but I'll check into that again. I checked the vacuum hoses and looked for an exhaust leak, all checked good. Truck ran great today, no problems whatsoever. So now P0174 is pending.
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Okay, well how do check to see if it's bad? Do you have to pull the valve cover and check to see if the ball inside the PCV isn't stuck? Can it be cleaned with brake cleaner, etc... to free it up? Thanks for the info.
You Keep What You Kill
Joined: Dec 2006
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From: Huntersville, NC
That is a good question... and I don't know the answer. However, your recommended solution sounds as good as any.
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carpe_diem
1983 - 2012 Ranger & B-Series
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Jan 5, 2015 03:22 PM
